Valve



C. S. POPE Peb. 24, 1931.

VALVE Filed July 14, 1928 Ta L (/mg@ @fb/be,

`Patented Feb. 24, 1931 UNITED STATES PATENT OFFICE `CHARLES S. POPE, 0F CHICAGO, ILLINOIS, ASSIGNOR TO CENTRAL VALVE MFG. C0.`OF CHICAGO, ILLINOIS, A CORIORATION 0F DELAWARE VALVE Application led July 14, 1928. Serial No. 292,634.

The present invention pertains to valves of the type in which the head is equipped with a replaceable composition disk for coaction with the seat.

The principal object of the invention is to provide an improved valve of the type de scribed in which the disk is held in place on the head by an easily removable retaining ring.

Another important object of the invention is to provide a composition disk of novel formation for application to the head of a valve. l

Other objects and advantages of the inven tion will be apparent to those skilled in the art upon a full understanding of the construction, arrangement and operation of the improved valve.

Two different valve structures embodying various features of the invention are presented herein for the purpose of enf-amplification, but it will of course be appreciated that the invention is susceptible of embodiment in `other forms coming equally within the scope of the appended claims.

In the accompanying drawings:

Fig. 1 is a vertical section through a valve constructed in accordance with the invention; i

Fig. 2 is a vertical section through the head of the valve shown in Fig. 1;

Fig. 3 is a perspective view of the disk-retaining ring; y

Fig. 4 is a perspective view of the disk; and

Fig. 5 is a vertical section through another valve embodying the invention.

The valve shown in Figs. 1, 2, 3 and 4 consists of a body 10 which contains a seat 11, a bonnet 12 which is screwed intothe body, a stem 13 which extends into the body through the bonnet in screw-threaded engagement with the latter, a handle 14 on the upper end of the stem, a head 15 on the lower end of the stem, a composition disk 16 which is posi `tioned against the lower face of the head 15 and is adapted to coact with the seat 11 when the valve is closed, and a disk-retaining ring 17 which serves to hold the disk 16 aga-inst the head 15.

The *lower face18 of the head 15 is `pref-` erably flat, and' is provided at its center with a downwardly extending stud `19. The upper face 20 of the disk 16 iits against the lower face 18 of the head, and is provided at its center with a recess 21 into which the stud 19 on the head projects. The disk 16 has a spherical portion 22 for coaction with the seat 11 and a rim portion 23above and outwardly of the spherical portion for coaction with the upper face 24 of the ring 17. The ring 17 fits snugly about the base of the spherical portion 22 and is provided with a plurality of circumferentially spaced tongues 25 which `are bent upwardly and then inwardly into hooked engagement with the upper surface 26 of the head 15, whereby to securely position the disk against the head 15.

`When it is desired to replace the disk 16, the tongues 25 of the ring 17 are bent outwardly to permit removal of the ring. After the ring 17 has been removed, the disk 16 may be separated from the head 15. If, by reason of long usage under high temperatures, the disk has become cemented or vulcanized to` the lower face of the head, the separation may be easily effected by inserting a knife blade between the contacting surfaces of the disk and head. A new disk may then be positioned against the head and centered relative thereto by means of the stud 19, and may be secured in place by fitting a new ring 17 about the spherical portion 22 against the rim portion 23 and bending the tongues 25 upwardly and inwardly about the upper edges of the head 15.

The disk 16 may be made of any material suitable for the purpose, such as rubber, rubber composition, leather, treated fibre, metal or the like.

The valve shown in Fig. 5 differs from that shown in Figs. 1 to 4 inclusive in that it is of larger size and the head 27 on the stem 28, instead of being rigid with the stem, is laterally shiftable with respect thereto whereby to permit the head, together with the disk 29 attached thereto, to shift laterally into centered relation with the seat 30 in case the stem is not absolutely concentric with the seat. The disk 29 is detachably secured to the headwith a retaining ring 31, as in that for-1n of the invention illustrated in Figs. l to 4L inclusive.

I claim: v

l. In a valve, a head,'a disk positioned against the lever fee@ 0i ,Said head, and, retaining ring' .posdened against die 0e/56.1 portion of the lower face of said disk and provided with a plurality of narrow circumferentially spaced tongues which are bent up.-y 1 wardly and inwardly overY the edgeof'said head.

2. In a valve,v a head, a disk positioned against the lower face of saidy ireadl and formed with a spherical seat-engaging'porf tion, and a substantially Hat retaining ring positioned about said spherical portion vand against the lewer side of said disk and provided with a plurality of narrow circumfer-` 0 ential'ly spaced ears which are bent upwardly and inwardly over theedge of said head.

3. In a valve, a head provided with a een! tering stud on its lower face, a disk positioned against the lower face of said head and having a recess for the reception of" said stud, and readily detachable means engaging withV the peripheryy of said disk to holdthe saine in position against said head.

In testiniony whereof I have hereunto sub- 30. scribed iny naine.

` CHARLES s, Porn 

